Home / 13,242.29-18,279.57-7,936.08

Finding the Fourth Proportional to 13,242.29, 18,279.57 and 7,936.08

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Solution

The fourth proportional to 13,242.29, 18,279.57 and 7,936.08 is: 10,954.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.29 : 18,279.57 = 7,936.08 : x
  2. Step 2: Convert to fraction form
    13,242.29/18,279.57 = 7,936.08/x
  3. Step 3: Cross multiply
    13,242.29x = 18,279.57 × 7,936.08
  4. Step 4: Simplify right side
    13,242.29x = 145,068,149.28
  5. Step 5: Solve for x
    x = 145,068,149.28/13,242.29
  6. Step 6: Final answer
    x = 10,954.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.